Join Affirm as a Senior Software Engineer to lead backend development for innovative credit card solutions in a remote-first environment.
Posted by employer 2 months ago
First seen on Joblaze 2 months ago
Last verified on the company career page 18 hours ago
Skills & Technologies
Requirements
- Experience
- 4+ years
Not disclosed in this posting: visa sponsorship.
Benefits
Joblaze summary
In this role, the Senior Software Engineer will lead a team in developing and delivering backend systems that support Affirm's innovative credit card solutions, focusing on both transaction processing and post-transaction systems. Proficiency in technologies such as Python, Kotlin, AWS, and Kubernetes is essential, along with experience in front-end applications and large codebase management. This position is ideal for someone with over four years of engineering experience who thrives in a collaborative environment and is committed to fostering team growth and quality. Affirm's remote-first culture and emphasis on transparency in credit make this an exciting opportunity for engineers looking
Joblaze insights
- Listed about 2 months ago — first seen on Joblaze August 6, 2026. Last confirmed on Affirm's careers page October 7, 2026.
- This exact title is also open at 1 other location at Affirm: Remote Spain.
- Starts above 50% of 10 comparable senior backend roles in Poland that list Kubernetes we track (median $78,709 across 5 companies). See Kubernetes salary trends
Quick facts
- Is the Senior Software Engineer, Backend (Card) role remote?
- Yes — Affirm lists this as a fully remote position.
- What's the salary range?
- Affirm lists PLN 308,000–PLN 428,000 for this role.
- How much experience is required?
- At least 4 years of relevant experience for this Senior Software Engineer, Backend (Card) role.
- What's the tech stack?
- Joblaze extracted these technologies from the posting: AWS, Kotlin, Kubernetes, MySQL, Python.
- What seniority level is this role?
- Affirm targets senior candidates for this position.
- Is this full-time or contract?
- Contract for this Senior Software Engineer, Backend (Card) role at Affirm.
From the original posting
At Affirm, we exist for the moments that matter—giving people a clear, predictable way to pay over time, with no hidden fees, no surprises, and no tradeoffs on what matters most.
We are reinventing credit cards in the most transparent way possible. We are working directly with card issuers to change how credit is used throughout the world, creating new types of cards that work for both their everyday lives and large purchases with extremely straightforward, flexible terms. You'll work across stacks and across the company, working both in just-in-time transaction processing that has to take place in milliseconds, along with our ledgering and reconciliation systems in post-transaction processing. This is some of the more difficult, exciting, experimental engineering work in Affirm. Join us and our team in Spain and Poland to help us revolutionize payments!
What You'll Do
· You will be responsible for owning and delivering quarterly goals for your team, leading engineers on your team through ambiguity to solve open-ended problems, and ensuring that everyone is supported throughout delivery.
· You will support your peers and stakeholders in the product development lifecycle by collaborating with product management, design & analytics by participating in ideation, articulating technical constraints, and partnering on decisions that properly consider risks and trade-offs.
· You will proactively identify project, process, technology or business issues, advocate for them, and lead in solving them.
· You will support the operations and availability of your team’s artifacts by creating and monitoring metrics, escalating when needed, and supporting “keep the lights on” & on-call efforts.
· You will foster a culture of quality and ownership on your team by setting or improving code review and design standards for your team, and advocating for them beyond your team through your writing and tech talks.
· You will help develop talent on your team by providing feedback and guidance, and leading by example.
What We Look For
· You have a total of 4+ years of experience as a software engineer.
· You are experienced in designing, developing and launching backend systems at scale technologies like Python, Kotlin, AWS, MySQL, and Kubernetes.
· You have experience shipping front end applications
· You have experience defining a technical plan for the delivery of a significant feature or system component with an elegant, simple and extensible design. You write high quality code that is easily understood and used by others.
· You are proficient at making significant changes in a large code base, and have developed a suite of tools and practices that enable you and your team to do so safely.
· Your experience demonstrates that you take ownership of your growth, proactively seeking feedback from your team, your manager, and your stakeholders.
· You have strong verbal and written communication skills that support effective collaboration with our global engineering team.
Total rewards
We believe the people building honest financial products at Affirm should share in its success. That's why our total rewards are designed to support your health, growth, financial well-being, and future.
In service of our mission, we reward employees through a combination of base pay, equity (from parent company), and comprehensive benefits.
Base Pay Grade - N
308,000 zł - 428,000 zł
Base pay ranges and placement within those ranges are determined based on several factors, including role, experience, and job-related skills.
In addition to base pay, all employees in this role are eligible to receive equity from the parent company each year. This means as Affirm’s parent company grows, employees have the opportunity to share in that growth financially.
Equity Grade - 4 (awarded in US Dollars)
Affirm Holdings, Inc. Equity Grade example
Equity grade: 4
New hire equity: $32,000-$48,000
Annual Refresh: $10,000
Reward equity: $0-$150,000
Affirm also provides flexible spending wallets to all employees for technology and wellbeing related needs, which are reimbursable up to 1390 zł per month.
In addition to your compensation, our comprehensive benefits are designed to support you and the people who matter most. Benefits include:
- Competitive paid time off, paid public holidays, and additional paid Away Days to rest and recharge.
- Comprehensive private healthcare through Lux Med's Platinum package.
- A MultiSport card to support your health and well-being.
- Learning and development programs to help you grow professionally.
- Family healthcare support through Maven and parental leave support through Parentaly.
- Mental well-being support through Lyra, including up to 12 confidential counseling or coaching sessions each year for you and your household members.
- Financial well-being support through Northstar, with unlimited access to Certified.
- Financial Advisors and planning tools at no cost to you.
- Employee Resource Groups (ERGs) that foster connection and inclusion.
- Eligibility for creative tax benefits, subject to applicable law, role, and company policy.
Location - Remote Poland
The majority of our roles can be located anywhere in Poland.
**This job description is not a contractual document, and is not intended to have binding force.**
#LI-Remote
Remote-first with flexibility built in
Affirm is proud to be a remote-first company. Most roles can be done from almost anywhere within the country of employment. Some positions may occasionally require in-person work at an Affirm office, and a few are office-based due to the nature of the work. All new hires will be invited to attend an in-person onboarding experience.
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Standard company text repeated across Affirm's postings is omitted here.